title: Quantitative structural analysis of twin boundary in alpha-Zn7Sb2O12 using HAADF STEM method.
abstract: The structure and composition of the 1/4{110} twin boundary in alpha-Zn7Sb2O12 have been determined by using quantitative high-angle annular dark field scanning transmission electron microscopy (HAADF STEM) analysis. The noise in the experimental HAADF STEM images is reduced by using the maximum entropy method and average processing, and the parameters used in dynamical simulations are experimentally determined. From the analysis, it has been found that octahedral sites in the twin boundary slightly shift parallel to the [110] direction, and a reduction of the Sb concentration at the octahedral sites on the plane adjacent to the twin boundary was detected. The reduction was measured from three regions in the same twin boundary, and the Sb concentrations were 4 +/- 3, 8 +/- 3 and 19 +/-2 at% from 33 at%.
authors.affiliation: Department of Physics, Tokyo University of Science, 1-3 Kagurazaka/Shinjuku-ku, Tokyo 162-8601, Japan. a1204618@rs.kagu.tus.ac.jp
authors.forename: Koji
authors.initials: K
authors.lastname: Kuramochi
authors.forename: Kentaro
authors.initials: K
authors.lastname: Suzuki
authors.forename: Takashi
authors.initials: T
authors.lastname: Yamazaki
authors.forename: Kazutaka
authors.initials: K
authors.lastname: Mitsuishi
authors.forename: Kazuo
authors.initials: K
authors.lastname: Furuya
authors.forename: Iwao
authors.initials: I
authors.lastname: Hashimoto
authors.forename: Kazuto
authors.initials: K
authors.lastname: Watanabe